Well, yes, ive seen stuff like this happen a few times. Most of the time its just a bunch of indies that ended up finding eachother and go looking for trouble, but the RM invasions have been happening a fair bit recently.
But its not all 5 on 1 fights. Quite often when im out trading, i wont come across much more than a lone Gunboat or a couple of fighters/bombers, same when im mining. but i live in the low times, (+8 GMT) during the higher times things would be a bit different. and i dont even bother going on my RM chars unless theres hostile activity nearby.
If you find yourself outnumbered by hoards of hostile ships you have only three options, run away, submit to their demands if they're reasonable or call for backup of your own. Not much els can be done really.
Edit: apart from lodging a complaint in their faction feedback. results are not garrenteed though
